Sea Tel 9711-44 KU-BAND TX/RX, Installation And Operation Manual

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Setup – Modem Connections, Setup and Test 9711-44 Ku-Band TXRX
13-4
13.6.4. STM Modems
A serial cable should be fabricated from an RJ-45 straight serial cable. Cut the RJ-45 off of one end and strip
the outer sheath off. Check continuity of the wire color code to identify color of the wires from pins 1, 2, 3
& 6 to make the connections below.
1. Connect the wire from RJ-45 pin 1 to the SW2 (TX Mute) terminal of the Terminal Mounting Strip.
2. Connect the wire from RJ-45 pin 2 to the NMEA TX- (GPS) terminal of the Terminal Mounting Strip.
3. Connect the wire from RJ-45 pin 3 to the EXT AGC (Network Lock) terminal of the Terminal
Mounting Strip.
4. Connect the wire from RJ-45 pin 6 to the GND (Ground) terminal of the Terminal Mounting Strip.
13.7. SYSTEM TYPE parameter
The System Type parameter is used to enable a variety of system functions. With this parameter value set to 0,
the DAC software functions will be as follows:
•
External AGC, or Modem Lock, function is used to bring an external modem lock signal from a satellite modem into the
ACU as a positive ID that the antenna is on the desired satellite. This input is NOT used for Tracking purposes, it is only
used during search to identify when the antenna has acquired the correct satellite. This external AGC function in the
DAC software is
disabled.
Expected input is 0 VDC when the modem has RX sync/Network Lock and a positive
voltage (+15 VDC max) when the does not have lock.
•
LNB Voltage - This function enables the Tracking Receiver to output 13/18 VDC, and/or 22kHz Tone to power an LNB
and/or control a Matrix Switch. This function is
disabled
.
•
The blockage output (SW2) of the ACU is a
short
to ground circuit when the antenna is in a programmed blockage
zone, is searching, or targeting and or is mis-pointed by 0.5 degrees or greater. Whenever one of these conditions
exist a transistor on the main PCB in the ACU shorts to ground providing a current sink of 0.5 amps max to control
below decks dual antenna coax switches or TX Mute control to a satellite modem (for radiation hazard control or TX
mute requirements for FCC compliance).
•
Relative Azimuth value is normally only visible in the Antenna main menu display. The Azimuth entry menu normally
displays Azimuth position, DishScan tracking signal and AGC.
•
When Search limit is reached the antenna will return back to the origin of the search pattern.
•
When the ACU power is turned ON it does not automatically target the satellite that was used last.
•
Pressing RESET on the front panel of the ACU normally only resets the processors inside but does not re-target the
satellite.
The functions below can be enabled to change the normal behavior of the system if desired. Select system options
according to the following table. Add together all the desired options and enter the sum into the SYSTEM TYPE
parameter to enable the desired functions.
128 Reverse External Modem Lock input polarity (logic hi = lock).
If you know that the modem you will be using with the system provides requires a logic hi (+15 VDC
max) when it has modem lock or you find the AGC reading for locked and unlocked conditions from
your modem need to be reversed you must enable this function in your current SYSTEM TYPE
parameter.
64 Enables LNB voltage output from the ACU.
This is NOT recommended for Series 09 systems, because they ALL provide the LNB voltage at the
pedestal.
32 Display Relative in the Azimuth entry display.
Enabling this function causes REL position to take the place of the DishScan signaling in the Azimuth
entry display. Relative position of the antenna is RARELY more desirable than the DishScan
signaling.
16 Reverse blockage output logic (SW2 logic hi = blocked).
If you know that the modem you will be using with the system requires a logic hi (open circuit) to
mute or you find that the Modem is being muted when the antenna is ON satellite (and un-muted
when the antenna is blocked, searching or targeting) you must enable this function in your current
SYSTEM TYPE parameter.
8 Reverse TX Polarity -